Search Constraints
You searched for:
Period 18th century
Remove constraint Period: 18th centuryClassification Prints
Remove constraint Classification: PrintsSearch Results
- Date:
- 1792
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 8 3/4 x 13 3/8in. (22.2 x 34cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1794
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 7 7/8 x 10in. (20 x 25.4cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 12 7/8 x 19 3/16in. (32.7 x 48.7cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 9 1/4 x 13 1/2in. (23.5 x 34.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1792
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 12 3/8 x 15 5/8in. (31.4 x 39.7cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1792
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 9 3/4 x 8 3/4in. (24.8 x 22.2cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1792
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 9 7/8 x 13 7/8in. (25.1 x 35.2cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1792
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 9 5/8 x 12 5/16in. (24.4 x 31.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1792
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 9 x 7 1/2in. (22.9 x 19.1cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 9 5/8 x 8 3/4in. (24.4 x 22.2cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1792
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 9 3/8 x 8 3/8in. (23.8 x 21.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
12. The Bridal-Night
- Date:
- 1797
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 11 1/4 x 17 1/4in. (28.6 x 43.8cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 10 1/4 x 6 3/4in. (26 x 17.1cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
14. The Sleep-Walker
- Date:
- 1795
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 12 1/2 x 8 1/4in. (31.8 x 21cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1795
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 12 1/2 x 8 1/4in. (31.8 x 21cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1795
- Materials & Techniques:
- Etching, hand-coloring
- Dimensions:
- Sheet: 12 3/4 x 9 1/8in. (32.4 x 23.2cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1795
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 8 3/4 x 13 3/8in. (22.2 x 34cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1800
- Materials & Techniques:
- Hand colored etching
- Dimensions:
- Sheet: 10 x 13 3/4in. (25.4 x 34.9cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
19. Ancient Music
- Date:
- 1787
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 15 7/8 x 21in. (40.3 x 53.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1792
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 16 1/8 x 11 1/2in. (41 x 29.2cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1800
- Materials & Techniques:
- Hand colored etching, with etched borders
- Dimensions:
- Sheet: 10 1/8 x 14 1/8in. (25.7 x 35.9cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1789
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 10 1/4 x 17 5/8in. (26 x 44.8cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
23. Betty Canning (Gunning) Revived, or a Peep at the Conjuration of Mary Squires and the Gipsy Family
- Date:
- 1791
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 9 x 13 1/4in. (22.9 x 33.7cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Etching and aquatint, hand-colored on moderately thick, slightly textured, cream wove paper
- Dimensions:
- Sheet: 9 13/16 × 13 3/4 inches (24.9 × 35 cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Etching with hand coloring on medium, slightly textured, cream laid paper
- Dimensions:
- Mount: 9 x 15 3/4 inches (22.9 x 40 cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1783
- Materials & Techniques:
- Etching
- Dimensions:
- Sheet: 12 9/16 x 9 9/16in. (31.9 x 24.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1799
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 10in. (25.4cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1800
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1806
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1782
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
31. A Block for the Whigs - or, The new State Whirligig (Poor John Bull's House Plundered at Noon Day)
- Date:
- 1783
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
32. A Block for the Whigs - or, The new State Whirligig (Poor John Bulls House Plundered at Noon Day)
- Date:
- 1783
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1783
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1798
- Materials & Techniques:
- Etching, hand-colored
- Dimensions:
- Sheet: 7 5/8 x 9 3/4in. (19.4 x 24.8cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1786
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Materials & Techniques:
- Engraving
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1786-1788
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
38. Fashionable Contrasts - or The Duchess's little shoe yielding to the Magnitude of the Duke's Foot
- Date:
- 1792
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
42. Wha Wants Me?
- Date:
- 1792
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1797
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
44. Taking Physic
- Date:
- 1800
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1796
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1782
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1783
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1783
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1799
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1795
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1798
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1798
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1788
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1796
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1799
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1806
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1784
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1798
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
59. [ untitled ]
- Date:
- 1800
- Materials & Techniques:
- Etching
- Dimensions:
- Image: 9 5/8 x 7 1/16 inches (24.5 x 18 cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1798
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1782
- Materials & Techniques:
- Etching with hand coloring in watercolor
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1798
- Materials & Techniques:
- Etching with hand coloring in watercolor
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1782
- Materials & Techniques:
- Etching with hand coloring in watercolor
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1779
- Materials & Techniques:
- Etching with hand coloring in watercolor
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1783
- Materials & Techniques:
- Etching with hand coloring in watercolor
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1780
- Materials & Techniques:
- Etching with hand coloring in watercolor
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
67. Les Trois Magots
- Date:
- 1791
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1782
- Materials & Techniques:
- Etching with hand coloring in watercolor
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
69. A Block for the Whigs - or, The new State Whirligig (Poor John Bulls House Plundered at Noon Day)
- Date:
- 1783
- Materials & Techniques:
- Etching with hand coloring in watercolor
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1800
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1787
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
73. Taking Physick
- Date:
- 1800
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
74. Wha Wants Me?
- Date:
- 1792
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
75. New Morality
- Date:
- 1798
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1798
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1792
- Materials & Techniques:
- Etching
- Dimensions:
- Image: 11 1/2 x 14 5/16 inches (29.2 x 36.4 cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1790
- Materials & Techniques:
- Etching, aquatint and stipple engraving, proof before letters
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1798
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1798
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1798
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1798
- Materials & Techniques:
- Etching
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1780
- Materials & Techniques:
- Stipple engraving on moderately thick, slightly textured, beige laid paper
- Dimensions:
- Sheet: 15 5/8 x 10 7/8 inches (39.7 x 27.7 cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art; Yale University Art Gallery Collection
- Date:
- 1779
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1783
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1782
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1782
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1787
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1785
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1788
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1790
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
93. Wouski
- Date:
- 1788
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1788
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1790
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1791
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1788
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1792
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Date:
- 1796
- Materials & Techniques:
- Engraving
- Dimensions:
- Sheet: 25 3/8 x 19in. (64.5 x 48.3cm)
- Collection:
- Prints and Drawings
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection